147977 has 2 divisors, whose sum is σ = 147978. Its totient is φ = 147976.

The previous prime is 147949. The next prime is 147997. The reversal of 147977 is 779741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109561 + 38416 = 331^2 + 196^2 .

It is a cyclic number.

It is not a de Polignac number, because 147977 - 2¹⁰ = 146953 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73988 + 73989.

It is an arithmetic number, because the mean of its divisors is an integer number (73989).

2¹⁴⁷⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

147977 is a deficient number, since it is larger than the sum of its proper divisors (1).

147977 is an equidigital number, since it uses as much as digits as its factorization.

147977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12348, while the sum is 35.

The square root of 147977 is about 384.6777872454. The cubic root of 147977 is about 52.8929844911.

The spelling of 147977 in words is "one hundred forty-seven thousand, nine hundred seventy-seven".